Hardy-Weinberg Equilibrium Concepts

Mr. Andersen explains how to solve Hardy-Weinberg problems, starting with an introduction to Hardy-Weinberg Equilibrium and its importance in genetics. He describes gene pools and allele frequencies, demonstrating how to calculate p and q values. The video covers probability in genetics and provides step-by-step solutions to Hardy-Weinberg problems, including example problems involving non-tasters and the delta-32 mutation related to HIV resistance.

What is the primary use of the Hardy-Weinberg Equilibrium in biology?

• To predict weather patterns

• To study genetic variation in populations

• To calculate chemical reactions

• To measure physical fitness

In a gene pool, what does the 'p' value represent?

• The number of individuals with a recessive phenotype

• The frequency of the dominant allele

• The total number of alleles

• The frequency of the recessive allele

If the allele frequency of a dominant trait is 0.3, what is the frequency of the recessive allele?

• 0.3

• 0.7

• 1.0

• 0.5

What does the term '2pq' in the Hardy-Weinberg equation represent?

• Total population size

• Homozygous recessive individuals

• Homozygous dominant individuals

• Heterozygous individuals

If 16% of a population is unable to taste a chemical, what does this percentage represent in Hardy-Weinberg terms?

• p squared

• p plus q

• 2pq

• q squared

How do you calculate the frequency of the dominant allele if q is known?

• Subtract q from 1

• Divide q by 2

• Add q to 1

• Multiply q by 2

In a population where q equals 0.4, what is the percentage of heterozygous individuals?

• 16%

• 32%

• 64%

• 48%

If the allele frequency of a recessive gene is 20%, what is the frequency of the dominant allele?

• 0.2

• 0.8

• 0.5

• 1.0

What is the probability of an individual being homozygous recessive if q is 0.2?

• 0.16

• 0.04

• 0.2

• 0.8

In the context of Hardy-Weinberg, what does it mean if a population is in equilibrium?

• Allele frequencies are changing rapidly

• Allele frequencies remain constant over generations

• The population is experiencing natural selection

• The population size is decreasing